FXZS60 NSTU 220107
AFDPPG
AREA FORECAST DISCUSSION FOR AMERICAN SAMOA AND INDEPENDENT SAMOA
NATIONAL WEATHER SERVICE PAGO PAGO AS
207 PM SST MON MAY 21 2012
.SHORT TERM...
.TONIGHT THROUGH WEDNESDAY NIGHT...SATELLITE IMAGERY SHOWS AN ELONGATED
SHEAR LINE RUNNING SOUTHEASTWARD FROM THE WEST OF THE DATE LINE TO
OVER FIJI TO BEYOND TONGA. A BROAD AREA OF HIGH PRESSURE TO THE SOUTH
OF THE SHEAR LINE WILL CONTINUE TO FORCE THE SHEAR LINE OVER THE SAMOAN
ISLANDS ON TUESDAY AFTERNOON INTO WEDNESDAY. SOUTHEAST WINDS OF 5 TO
10 KT WILL INCREASE TO 15 TO 20 KT ON TUESDAY EVENING AS THE SHEAR LINE
MOVES JUST TO THE NORTH OF THE FORECAST ZONES. AS A RESULT...EXPECT
INCREASING CLOUDINESS AND SCATTERED LIGHT SHOWERS STARTING ON TUESDAY.
.LONG TERM...
.THURSDAY THROUGH MONDAY...A SURFACE TROUGH AXIS IS PROGGED TO REMAIN
OVER THE SAMOAN ISLANDS ON THURSDAY AND FRIDAY BEFORE IT FADES ON
FRIDAY AFTERNOON. MODERATE TO FRESH TRADE-WINDS WILL CONTINUE UNTIL
FRIDAY MORNING WHERE WIND SPEED WILL DIMINISH TO NEAR 5 TO 10 KT AS
THE LEADING EDGE OF THE TROUGH DIG SOUTHEASTWARD THROUGH THE WEEKEND.
FOR NOW...WILL KEEP THE PREVIOUS FORECAST THE SAME. WILL MONITOR
THIS SITUATION BEFORE MAKING UPDATES. AS A RESULT...EXPECT MODERATE
TRADE-WINDS AND ISOLATED SHOWERS OVER THE NEXT SEVERAL DAYS.
&&
.MARINE...THE LATEST WAVE WATCH MODEL SHOWS A NEW SWELL TRAIN
ARRIVING ON TUESDAY AFTERNOON FROM THE SOUTH. HAZARDOUS SWELLS OF
7 TO 9 FEET WILL BE REINFORCED BY A 9 TO 12 FT ON FRIDAY EVENING.
THE PREVIOUS FORECAST WILL BE UPDATED TO MIRROR THIS EVENT. ISSUANCE
OF A SMALL CRAFT AND HIGH SURF ADVISORIES ARE MANDATORY TO REFLECT
THIS SITUATION.
&&
.PPG WATCHES/WARNINGS/ADVISORIES...
NONE.
&&
$$
BAQUI